An HD LED TV achieves deeper blacks as well as emitting brighter images, thereby producing better contrast ratios. They are slimmer (especially edge-LED lighting systems). They deliver better viewing angles than other LCD TVs and LEDs are long-lasting. LEDs are more energy efficient than their CCFL counterparts, and better than plasma Tvs and much better than CRTs. LEDs don't use mercury like some other backlighting methods. Enjoy TV watching experience like never before with this Koryo Koryo Koryo KLE49EXFN83 49 inches Full HD LED TV. The TV boasts of a resolution of 1920 x 1080 pixels that bring out pictures to life. With a high contrast ratio, you can now customize your viewing experience and watch television for as long as you want without having to worry about your eyes. The TV comes with 3 HDMI and 2 USB ports for maximum connectivity. The warranty shall be void by any act of attempted installation, servicing, alteration, or removal of parts by any third party not specifically authorized by Koryo.